MG MGB - Front Cover

THE
GEARBOX (ALL
SYNCHROMESH)
b.
Measure
the
depth E
of the
rear
bearing register
from
the
rear
face
of
the extension.
c
Fit
shims between
the
distance
tube and
the
bearing
to
bring
the dimension
measured
in
A
from
.000
to
.001 in.
(.000
to
.025
mm)
less
than
the dimension
measured
in
B.
Shims
of
.002
in.(.05
mm),
.005
in.
(.13
mm.)
and .010 in.
(.25
mm.) thickness
are
available.
(1.
Press
the bearing into
the
extension
using
tool
18G 186.
e.
Select
and
fit the
thickest
circlip
that
will
enter
the
rear
bearing
circlip
groove
from the
following
range:
.096
to
.098
in.
(2.43
to
2.49
mm.)
.098
to
.100
in.
(2.49
to
2.54
mm.)
.100
to
.102 in.
(2.54
to
2.59
mm.)
11.
Using
tool
18G
134
with adaptor
18G
134
BK,
fit
a
new
oil
seal.
Refitting
12.
Check
that the
shims
on
the third
motion
shaft
are
correctly
positioned
against
the distance
tube
shoulder,
and
fit the
extension.
13.
Fit and tighten
the
extension
securing
nuts.
14.
Reverse
the
removing
procedure
1
to
4.
Section
Fb.3
FRONT
COVER
Removing
1.
Turn
the
clutch release
bearing retaining
clips and
withdraw the hearing
from the lever.
2.
Remove
the rubber boot
from the
clutch lever.
3.
Unscrew
the
front
cover
retaining
nuts
and
remove
the
cover,
collecting
the
shims ■tted
in
front of the
first
motion
shaft bearing.
Dismantling
4.
Remove
the oil
seal and
gasket.
5.
Unscrew
the
nut
retaining
the clutch
lever
pivot
bolt,
remove
the
bolt, and
withdraw
the lever.
Reassembling
The
following
procedure
must
be
carried
out
when
fitting
a
new
front
cover or
if
any
of the first motion
shaft
components
have
been
changed.
6.
Calculate
the
thickness
of shims
required between
the
front
cover
and
the
bearing,
as
follows:
a.
Measure
the
depth
A
from the
face of the
cover
to
the
bearing
register
and add .012 in.
(.31
mm.)
for
the
compressed
thickness C
of the
joint
washer.
MGB. Issue
2.
22802
\Lf.
\V
‘
ti.
\
/'Doa47
Fig.
Fb.3
Removing
the
left-handed-threaded
first motion
shaft
nut
using
tool
18G
48
b.
Measure
the distance
B
that
the
first motion
shaft
bearing
protrudes
from
the
casing.
c.
Fit shims between
the bearing
and
cover
to
bring
the dimension
measured
in
B
from .000
to
.001
in.
(.000
to
.025
mm.)
greater
than
the
dimension in
A.
Shims
of
.002 in.
(.05
mm.)
and
.004 in.
(.10
mm.) thickness
are
available.
7.
Using
tool
18G
134
with adaptor
18G
134
Q, fit
a
new
oil
seal
to
the
cover.
8.
Position
the clutch
lever,
fit the
pivot
bolt,
screw
on
and
tighten
the
bolt
retaining
nut.
'
Fig. Fb.4
Front
cover
setting
up
3.
Front
cover.
4. Bearing.
1.
Gearbox main
casing.
2.
Gasket for front
cover.
A.
Depth of front
cover
to
beating
register.
B.
First motion
shaft bearing
protrusion.
C.
Compressed
thickness
of joint
washer.
Fb.3